Daz, I think you're much closer to the definitive Hufflepuff than a Slytherin. The friendly, confident, popular cheerleaders and frat boys make up Hufflepuff.
The problem with the sorting tests is the questions are leading so while one can have more than one honest answer they can easily deposit themself in whichever house they want to go. Which is why I tried three and got Ravenclaw every time, who knows under the real hat I might end up being a Slytherin simply because future dark wizards are uniformly sorted into Slytherin, with the exception of Peter Pettigrew but JK Rowling had to have at least one plot hole, no?